| Popis: |
The effect of gravitational direction on the dissolution of GaSb crystal into InSb melt and the growth of InGaSb was investigated using GaSb(seed)/InSb/GaSb(feed) sandwich sample under a constant temperature gradient. In 0.03 Ga 0.97 Sb crystal was grown on a GaSb seed. A GaSb feed crystal dissolved into InSb melt to supply the GaSb component. The experiments were carried out in the gold furnace with different inclination angles ( θ ) for gravitational direction, such as 0° (vertical), 53°(inclined), and 90° (horizontal) under 1 G condition. When θ =0°, the interface was almost flat and parallel to the original interface of GaSb(seed)/InSb. On the contrary, the interfaces were strongly distorted when θ =53° and 90°. The undissolved GaSb feed remained for θ =0°. However, it completely dissolved for θ =90°, and partially remained for θ =53°. The length of compositional uniform area was different in these three cases. These facts indicated that the dissolution and growth processes were strongly influenced by gravitational direction. |
Full Text from ScienceDirect